package com.diaosidadui;

import java.util.Scanner;

public class ConstantDemo {
    public static void main(String[] args) {

        System.out.println("HelloWorld "+"黑马程序员");
        System.out.println(666);
        System.out.println(-88);
        System.out.println(13.14);
        System.out.println(-5.21);
        System.out.println('A');
        System.out.println('0');
        System.out.println('我');
        System.out.println(true);
        System.out.println(false);
        //null是空常亮,不可以直接打印输出
        //System.out.println(null);
        Scanner sc = new Scanner(System.in);
    }
}
